Walter maesh jackson



(No Model.)

W. M. JACKSON.

GAS-BURNER.

No. 375,070. Patented Deo. 20, 1887.

A mxu: Y

UNITED STATES PATENT OFFICE.

WALTER MARSH JACKSON, OE NEW YORK, N. Y., ASSIGNOR TO THE GAS CONSUMERS BENEFIT COMPANY OF THE UNITED STATES, OF SAME PLACE.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 375,070, dated December 20, 1887.

Application filed February 9, 1887. Serial No. 227.026. (No model.)

To @ZZ whom may concern.-

Be it known that LWALTER MARSH J Acre soN, of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Gas- Burners; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates t0 the construction of gasburners, and more particularly to an improved method of construction as applied to my improved burner-body, a patent for which was allowed, circular of allowance being dated December 10, 1886, Serial No. 204:,866.

In the device shown in the allowed patent just mentioned a transverse diaphragm is employed, which is provided with a'central re-enforce plate and a pendent conoidal valve adapted to engage a seat formed on the horizontal base-plate of the threaded projection of the lower chamber of the burner-body. A proper-sized orifice is made in the diaphragm, which is proportioned to the diameter of the burner slit or opening, to effect differential pressure in the burnenbody, and thus equalize the discharge of gas from the tip under varying pressures from the feeder, by the iniiuX of gas operating upon the base ofthe diaphragm to regulate the valve-ad j ustmentrelative to its seat.

It has been found by practice that where a burner constructed as above described is subjected to more than an ordinary pressure of gas upon its diaphragm the pendent valve is raised rapidly, and the frictional resistance of the narrow annular gas-passage thus produced destroys the differential pressure previously established between the gas in the upper and lower chambers of the burner, and in consequence the valve is further closed and the volume of gas cut nearly off from the exit or flame-slit of the burner-tip by superabundant pressure ou the base of the valve.

To obviate this defect is the object of my present invention. I will now proceed to describe my method of accomplishing the desideratum, reference being made to the accompanying drawing, in which a side elevation in section is shown of my improved burner.

A represents the body of the burner. It is constructed of two half-shells that are joined at a center line, the junction as effected securing the diaphragm B in place, the base- `plate D of the burner-body having a gas-aperture, C, formed central to its threaded periphery, the conical wall of this perforation being adapted to receive a pendent conepointed valve, E. These features are shown in my allowed patent. Now, in order to overcome the deficiencies incident to this device,a perforation, a, of proper diameter is made in the base-plate D between the central valveseat and circumferential edge of this plate, thus producing a secondary gaspassage from the pillar-cock to the lower chamber of the burner-body. The influx of gas thus effected through this small orifice a is sufficient to restore the differential pressure to the under side of the diaphragm that should exist relative to the back-pressure resulting from the restrained flow of gas expelled at the tip or slit orifice while in process of combustion as an illuminant.

By means of the by-pass for the gas, just described, the pendentconoidal valve E is relieved of the excess of pressure upon its base, and if the size of the perforation a is graduated to the highest pressure standardthat is, the quantity of gas which will ilow through the by-pass alone-then the valve-inlet will be closed and all the gas will enter the burner proper through the by-pass, and any degree of pressure below this high standard to the lowest will cause the burner to consume automatically the set and uniform quantity of gas, the valve-inlet and by-pass being interdependent and reflexibly governing each other as to quantity of gas passed.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

Iny a differential pressure gaseburner, the combination,witha body, a burner-tip, aflexible diaphragm dividing the interior of the body into two chambers and provided with an opening for the passage of gas, a valve-seat located below the diaphragm and plovided with phragm and adapted to engage the Valve-seat. an opening adapted to be closed by a valve, In testimony whereof AI have signed this 1c and a second opening or by-pass, the said openspecification in the presence oftwo subscribing ing,` in the diaphragm and the oy-pass in the witnesses.

5 valve-seat being always open to permit of the WALTER MARSH JACKSON.

passage of a fixed quantity of gas at all times, W'itnesses: :irrespective of the position of the Valve or dia- I GEO. T. GADEN, phragm, of a, valve depending from the dial GEO. M. VARD. 

